*{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
}
ul,ol,li{
    list-style: none;
}

.clear{
    display: block;
    content: "";
    clear: both;
}

.center{
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}
.top{
    height: 50px;
}
.top .center img{
    height: 100%;
}
.top .center ul{
    list-style: none;
    float: right;
} 

.top ul li{
    float: left;
    margin: 10px 20px;
} 
.top ul li a{
    color: #333;
}

.nav-top{
    width: 900px;
    height: 70px;
    margin: 0 auto;
    }
.nav-top ul{
    list-style:none; 
    }
.nav-top li{
    float: left;
    font-size: 22px;
    font-weight: bold;
    line-height: 80px;
    margin-left: 40px;
}
.nav-top a{
    text-decoration: none;
    color:black;
    }
.nav-top a:hover{
    color: #D9534F;
    }